Leptin levels in patients with anorexia nervosa are reduced in the acute stage and elevated upon short-term weight restoration. - Hebebrand,J.; Blum,W.F.; Barth,N.; Coners,H.; Englaro,P.; Juul,A.; Ziegler,A.; Warnke,A.; Rascher,W.; Remschmidt,H. (Mol Psychiatry, 1997)